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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Hypotrachyna brevirhiza (Kurok.) Hale
  Smithsonian Contr. Bot. 25: 26 (1975); Parmelia brevirhiza Kurok. in M.E.Hale & S.Kurokawa, Contr. U.S. Natl Herb. 36: 166 (1964). T: Isla Riesco, Magallanes, Chile, 29 Apr. 1940, R.Santesson 2066; holo: S; iso: US. Parmelia lusitaniensis Filson, Muelleria 4: 323 (1981). T: Lusitania Bay, Macquarie Is., 10 Feb. 1964, R.B.Filson 5975 & P.Atkinson; holo: MEL.  
  Thallus adnate to tightly adnate, to 3–6 cm wide. Lobes crowded and imbricate, truncate, subirregularly branched, short, 1–5 mm wide; margins entire; apices incised. Upper surface ashy white to grey, dull, smooth to rugulose, without pustules or isidia, frequently white-pruinose; soralia capitate or soredia diffuse, coarse, developing towards lobe apices and partly laminally. Medulla white. Lower surface densely rhizinate; rhizines densely dichotomously branched. Apothecia very rare, sessile, 2–5 mm wide; thalline exciple smooth. Ascospores poorly developed, 6–8 × 3–4 µm. Pycnidia not seen. CHEMISTRY: cortex K+ yellow, UV-; medulla K+ yellow then red, C-, P+ orange; containing atranorin, chloroatranorin, salazinic acid (major) and consalazinic acid (minor).
  Occurs on Macquarie Is.; also known from South America. Grows on bark and rock.  
  Elix (1994h)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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